RU113735U1 - WATER DISINFECTION STATION - Google Patents

Abstract

1. A water disinfection station containing a unit for preparation of working solutions, a unit for supplying and dosing working solutions, a control and power unit, a membrane electrolyzer with support and clamping frames, a unit for separating the gaseous phase, a chlorination unit, alkali storage tanks, characterized in that ! the block for preparation of working solutions is equipped with a slot filter and regulators, and indicators of brine and softened water levels,! the unit for supplying and dosing working solutions is equipped with membrane dosing pumps,! the control and power unit contains switching power supplies equipped with chlorine and hydrogen gas analyzers,! the electrolyzer, which has support and clamping frames, is equipped with heat exchangers built into the electrode chambers, the supporting and clamping frames are made of shaped pipes and equipped with polymer or glass insulators, and the anodes and bipolar cells of the electrolyzer are made of a bimetallic sheet obtained by explosion welding! the gaseous phase separation unit is equipped with a check valve and process temperature controllers,! the chlorination unit is equipped with a chlorine sensor,! alkali storage tanks are equipped with indicators of the level of ready alkali solution extraction and breathing valves. ! 2. Station according to claim 1, characterized in that the blocks can be placed in separate modules connected by technical communications.

Description

The station is designed for the disinfection of drinking and waste water and can be used in plumbing and sewage systems.

Known and widespread are stationary chlorination water disinfection stations that carry out chlorination through the use of imported liquid chlorine in cylinders or containers (Abramov NN, Water Supply - M .: Stroyizdat, 1982, p. 280-290).

The disadvantage of such stations is the need for constant monitoring of the safety of the work in view of the use of explosive and highly toxic chlorine, which in case of leakage can affect not only the service personnel, but also the population of the areas adjacent to the water treatment facilities.

To reduce the likelihood of emergencies due to the development of a chlorinating agent directly on site, use installations that include:

- blocks of preparation and dosing of sodium chloride

- electrolyzers of various modifications (in which chlorine and sodium hydroxide bind to sodium hypochlorite)

- storage tanks of sodium hypochlorite, from which the chlorinating agent is fed into the disinfected water. (For example, patent RU 2090519 C1).

A well-known installation (patent RU 2090519 C1) includes an electrolyzer with separated anode and cathode chambers, a unit for preparing and dispensing an electrolyte solution, a communication system, a flow line for water, an ejector installed in a flow line for water and a collector-separator.

The unit for preparing and dosing the electrolyte solution includes a mortar unit, an osmotic dispenser, and pipelines forming a circulating electrolyte circuit.

The installation also contains a unit for cleaning the electrolyte solution from hardness salts and control devices.

The main disadvantage of this and similar stations is the lack of compliance with modern requirements for the organization and operation of systems used in water supply and sewage systems, namely, ensuring constant quality and safety control of the process, ease of installation and maintenance of station equipment.

The prototype of the proposed utility model is a station for water disinfection (patent RU 2281252 C2), which, like its analogues, includes:

a unit for preparing working solutions, a unit for supplying and dosing of working solutions, a control and power unit, a membrane electrolyzer having support and pressure frames, a gaseous phase separation unit, a chlorination unit, alkali storage tanks

At the same time, the unit for supplying and dispensing working solutions consists of an adjustment tank, a salt tank, a metering pump, an accumulating tank, and a rotameter.

The membrane cell consists of a bipolar, a monopolar of the anode, a monopolar of the cathode, a clamping frame, a support frame, a bimetallic plate, a sheet of a perforated or expanded metal, ion-exchange sulfation cation exchange membrane

The station also includes an ejector, a filter for treating water entering the electrolyzer, an alkali storage tank, a pump, a heat exchanger, a backup storage tank, a contact tank, and a thyristor current rectifier.

The advantage of this station in comparison with analogs is that the disinfectant production unit allows to obtain a chloragent of increased bactericidal activity without the use of liquid chlorine, which eliminates the possibility of volley release of toxic and toxic substances into the atmosphere and practically minimizes the likelihood of accidents.

However, the use of this installation for water disinfection in the domestic water supply system does not meet all the requirements for the organization of water disinfection stations, since the concept of “station” presupposes the creation of some kind of infrastructure for managing water disinfection processes in the general scheme of water supply and sewage facilities.

The objective of the proposed utility model is to create a safe, easily mounted and operated technical complex.

The problem is solved in that in a water disinfection station containing a unit for preparing working solutions, a unit for supplying and dispensing working solutions, a control and energy unit, a membrane electrolyzer having support and pressure frames, a gaseous phase separation unit, a chlorination unit, and alkali storage tanks

- the unit for the preparation of working solutions is equipped with a slit filter and regulators and indicators of the levels of brine and softened water

- the unit for supplying and dispensing working solutions is equipped with membrane metering pumps

- the control and power unit contains switching power supplies equipped with gas analyzers of chlorine and hydrogen

- the electrolyzer having supporting and clamping frames is equipped with heat exchangers built into the electrode chambers, the supporting and pressing frames are made of shaped pipes and equipped with polymer or glass insulators, and the anodes and bipolar cells are made of bimetal sheet obtained by explosion welding

- the gaseous phase separation unit is equipped with a check valve and process temperature controllers

- the chlorination unit is equipped with a chlorine sensor

- alkali storage tanks equipped with indicators of the level of selection of the finished alkali solution and breathing valves

The station is also characterized in that the composite units can be placed in separate modules connected by technical communications.

The description of the utility model is represented by a block diagram of a water disinfection station,

Where:

1 - block preparation of working solutions,

2 - block supply and batching of working solutions,

3 - control unit and energy,

4 - membrane electrolyzer having supporting and clamping frames,

5 - block separation of the gaseous phase,

6 - chlorination unit,

7 - alkali storage tanks

Benefits of the utility model:

- the fact that the unit for the preparation of working solutions is equipped with a slit filter and regulators and indicators of the levels of brine and softened water can improve the usability of the station

- the fact that the electrolytes supplied to the electrolyzer are prepared with softened water, prolongs the uptime of the sulfate-cationic membrane, the resource and reliability of the installation as a whole

- the fact that the supply and batching unit for working solutions is equipped with membrane dosing pumps prevents the possibility of hyper or hypochlorination of water

- the fact that the control and power unit contains switching power supplies, which allows converting alternating current to direct, as well as regulating current-voltage characteristics

- the fact that the control unit is equipped with gas analyzers of chlorine and hydrogen allows the process to be carried out with great accuracy and reliability, in contrast to the use of rotameters

- the fact that the electrolyzer is equipped with heat exchangers built into the electrode chambers allows to reduce costs and, accordingly, increase the yield of chlorine per unit of consumed electricity and salt

- the fact that the support and clamping frames are made of profile pipes can significantly reduce the weight of the product and thereby simplify the installation of equipment

- the fact that the support and clamping frames are equipped with polymer or glass (rather than ceramic) insulators increases the safety of installation or operation of the electrolyzer

- the fact that the anodes and bipolar cells are made of bimetallic sheet obtained by explosion welding, virtually eliminates the ingress of chlorine into the work area and poisoning personnel serving the installation

- that the gaseous phase separation unit is equipped with a check valve and process temperature controllers

- the fact that the chlorination unit is equipped with a chlorine sensor allows you to adjust the process of water disinfection in real time the operation of the installation as a whole, changing the flow of electrolytes (metering pumps) and current-voltage characteristics on the cell

- the fact that the alkali storage tanks are equipped with indicators of the level of selection of the finished alkali solution and breathing valves

The technical result is an increase in safety and operation due to automation of control, and ease of installation, by reducing the weight of the equipment and providing the possibility of modular design,

Claims (2)

1. A water disinfecting station, comprising a unit for preparing working solutions, a unit for supplying and dispensing working solutions, a control and energy unit, a membrane electrolyzer having support and pressure frames, a gaseous phase separation unit, a chlorination unit, alkali storage tanks, characterized in that the unit for the preparation of working solutions is equipped with a slit filter and regulators, and indicators of the levels of brine and softened water, the unit for supplying and dispensing working solutions is equipped with membrane metering pumps, the control and energy unit contains switching power supplies equipped with gas analyzers of chlorine and hydrogen, the electrolyzer having support and pressure frames is equipped with heat exchangers built into the electrode chambers, the support and pressure frames are made of shaped pipes and equipped with polymer or glass insulators, and the anodes and bipolar cells are made of bimetal sheet obtained by explosion welding, the gaseous phase separation unit is equipped with a check valve and process temperature controllers, the chlorination unit is equipped with a chlorine sensor, alkali storage tanks are equipped with indicators of the level of selection of the finished alkali solution and breathing valves. 2. The station according to claim 1, characterized in that the blocks can be placed in separate modules connected by technical communications.